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Writing a Sub Procedure

Office 2007

A Sub procedure is a series of Visual Basic statements enclosed by the Sub and End Sub statements that performs actions but doesn't return a value. A Sub procedure can take arguments, such as constants, variables, or expressions that are passed by a calling procedure. If a Sub procedure has no arguments, the Sub statement must include an empty set of parentheses.

The following Sub procedure has comments explaining each line.

' Declares a procedure named GetInfo 
' This Sub procedure takes no arguments
Sub GetInfo()
' Declares a string variable named answer
Dim answer As String
' Assigns the return value of the InputBox function to answer
answer = InputBox(Prompt:="What is your name?")
    ' Conditional If...Then...Else statement
    If answer = Empty Then
        ' Calls the MsgBox function
        MsgBox Prompt:="You did not enter a name."
    Else
        ' MsgBox function concatenated with the variable answer
        MsgBox Prompt:="Your name is " & answer
    ' Ends the If...Then...Else statement
    End If
' Ends the Sub procedure
End Sub


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